Pneumatic tire.



A. F: ANGBIIQIGOLA.

mmmzrm mn; U f APPLICATION FILED AUG. 5, 1901. nnmiwnn mm. 18, 1909. 943.371

Patented Dac. 14, 1909.

cordance with the invention. The plane of stood to be constructed of-rubber and canvas as usual, and formed in any. approved COLA, a subject of the King of Italy, residmovement 0 sharp edges thereof in service,

by which the above objects are attained, to

tions of the same taken on the lines 8-8- I and 12-42 respectively in. Fig. 10.

wheel for automobile or like service, and B ACHILLES F. ANGELICOLA, OF NEW YORK, N. Y.

PNEUMATIC TIRE.

Application filed August 5, 1907. Serial No. 387,028.

Specification of Letters Patent.

Patented Dec. 14, 1909. Renewed February 18, 1909. Serial No. 478,620.

To all whom it may concern:

Be it known that I, ACHILLES F. ANGELI- ing .in the city of New York, borough of Queens, in the county of Queens and State of New York, have invented a certain new and useful Improvement in Pneumatic Tires, of which the following is a specification. I

The invention relates to that class of tires in which metal plates embedded in the tread of the tire are employed to prevent puncture, and the object of the invention is to provide a tire in which the plates are formed and located in such manner as to afford the desired protection without materially lessening res1liency,-and in which the danger of abradin or cuttin the material of the tire b disp acement o the plates or is avoided.

' The invention consists in certain novel features of construction and arrangement be hereinafter described.

The accompanying drawings form a part of this specification and show preferred forms ofthe invention.

Figure 1 is a vertical section partly in elevation, showing a tire constructed -in acsection is indicated by the line 11 in the succeeding figure. Fig. 2 is a transverse section of the tire on the line 22in*Fig. 1. Fig. 3 is a similar view on the line 33 in Fig. 1. Fig. 4. is an elevation showing a portion of the periphery of the tire. Fig. 5 is asection corresponding to a portion of Fig. 1, showing three interlocked plates on a larger scale. Fig. 6 is a similar view, the plane of section being the central peripheral line. Fig.-? is a face view of one of the outer plates. Figs. 8 and 9 are cross-secand 9 -9 respectively. Fi'. 10 isv a face view of'one of'the inner p ates. Figs. 11 and 12 are cross-sections on the lines 11-11 Similar letters of reference indicate like parts in all the figures. 3 A is a tire-casing which may be undermanner for attachment to the rim of a is the usual inner tube inclosed thereby.

sitions in the tire.

For the purposes of this description the casing and tube may be considered as a whole and will be termed a tire.

C and D are plates of suitable material, preferably sheet steel, embedded in the outer 'or tread portionof the tire and extending in two interlocked series around the entire circumference. The plates of both series are similar but those of the outer series 0 C are preferably wider or occupy more space peripherally, than the inner plates D D.

The plates G comprise a plane portion hav-' ing lugs or flan es 0 C on two opposite side-edges, curle toward each other on the inner face, and the plates D, of the same length but narrower, have corresponding logs or flanges D D curled towardeach other on the opposite sides of the outer face.

The tire is molded and vulcanized with the plates located therein as shown, each outer plate C slightly separated from its neighbor and engaged therewith by an inner plate D through the interlocking of its lugs D with the a jacent lugs C on the adjoining outer plates. Actual contact of the interlocking ln s, and the resultant wear and cutting efl ect of the edges of the metal on the inclosing rubber, is avoided by so spacing the plates as to have each completely inclosed 'by the rubber independently; and for the purpose of anchoring the plates of both series against movement transversely of the tread, each plate is provided witlra wide central notchor recess C .D in the lugs C D, which reserves the continuity of the rubber throu both series and aids in maintaining the p ates in the desired relative po- The tire thus constructed is practically puncture-proof alon the tread, and by making the latter as wi e as practicable the vulnerable surfaces at the sides of the tire are correspondingly reduced; the

flexibility of the'inclosed armor avoids stitfness and the consequent reduction in resilienc By inclosing each plate independently in the rubber of the tire abrasion is largely obviated, andby the reversed positions of the inner and outer plates relatively 1 to each other, the cuttin edges of the interlocking lugs cannot wor either toward the periphery or towardthe interior, the lugs on one plate bein covered by the body or plane portion of the other, and movement ofeither plate radially is resisted by the broad surfaces presented. V I

Modifications may be made in the forms overlapped ends being oppositely notched to allow a portion of the rubber of the tire to extend unbrokenly theret-hrough.

- In testimony that I claim the invention 15 above set forth I aflix my slgnature, in presence of two witnesses.

ACl-IILLES F. ANGELICOLA.

Witnesses:

CHARLES R. SEARLE, CHARLES LEE MEYER. 

